Ruthenium powder metal alloy and method for making same

Details Ruthenium powder metal alloy and method for making same Ruthenium powder metal alloy and method for making same

C - Chemistry, Metallurgy

22

C

75/154, 75/95

C22C 1/04 (2006.01) B22F 1/00 (2006.01) C22C 5/04 (2006.01)

Patent

CA 1053485

RUTHENIUM POWDER METAL ALLOY AND METHOD FOR MAKING SAME Abstract of the Disclosure Ductile ruthenium alloys for electrical contacts, sparking electrodes, are provided by mixing, by weight, about 70-80% ruthenium powder with about 20-30% of a pre-alloyed powder consisting essentially of cobalt, nickel, chromium, tungsten and silicon, the powders being of less than 200 mesh size, the mixture being blended with a binder to enable easy handling in pressing a green part using pressures of from about 35,000-50,000 psi followed by sintering in dry hydrogen or inert gas or in a vacuum, sintering temperature and time ranging from about 2150° F to about 2250° F for periods of from about 45 minutes to about 30 minutes, respectively. Image

221605

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